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Monolithic Power Systems Inc. MP5094GJ-P
- Part No.:
- MP5094GJ-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
MP5094GJ-P.pdf
- Description:
- DUAL 12V/5V CURRENT-LIMIT SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:3,411
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Product details
Overview
MP5094GJ-P from Monolithic Power Systems is a dual-channel, integrated current-limiting e-fuse with independent 12V and 5V input paths, 50mΩ/30mΩ RDS(ON), fixed 4A/2.95A (Ch1) and 3A/2.18A (Ch2) trip/hold current limits, and fast 2μs output over-voltage clamp at 15V/6V - deployed in hot-swap power rails for SSDs and HDDs.
For engineers reviewing the MP5094GJ-P datasheet, MP5094GJ-P pinout, MP5094GJ-P application, or MP5094GJ-P equivalent, this device delivers verified dual-rail protection with soft-start control, hiccup-mode OCP, latch-off thermal shutdown, and transient tolerance up to 24V/100ms (Ch1) and 16V/100ms (Ch2).
Technical Context
The MP5094GJ-P implements two independent high-side current-limit switches with internal MOSFETs, each featuring dedicated UVLO (9.7V/4.4V), adjustable soft-start via external SS capacitors, and fast OVP comparators with 2μs response. It integrates no external sense resistor, relying on MOSFET RDS(ON)-based current sensing.
Protection logic includes primary current limiting (trip/hold), secondary 8A short-circuit cutoff (<1μs), hiccup-mode recovery (200ms off-time), and thermal shutdown at 155°C. EN pin enables global on/off control with 280kΩ internal pull-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (Ch1) | 10.2V–14.5V continuous; supports 24V/100ms surge - enables robust 12V rail operation in live-insertion systems. |
| Input Voltage Range (Ch2) | 4.6V–5.5V continuous; supports 16V/100ms surge - ensures compatibility with standard 5V logic and storage interfaces. |
| RDS(ON) (Ch1/Ch2) | 50mΩ / 30mΩ at 25°C - minimizes conduction loss and self-heating under full load (≤0.8W per channel at 4A). |
| Quiescent Current | 110μA typical per channel (EN low) - enables low-power standby in always-on storage subsystems. |
| OVP Threshold (Ch1/Ch2) | 15.0V / 5.7V - clamps transients before downstream 12V/5V ICs exceed absolute maximum ratings. |
| Current Limit (Trip/Hold) | Ch1: 4A / 2.95A; Ch2: 3A / 2.18A - provides defined fault current ceiling and sustained hold current during overload. |
| Soft-Start Control | SS1/SS2 pins accept external capacitor (e.g., 68nF → ~10ms ramp) - prevents inrush-induced backplane droop during hot-swap. |
Pinout & Package
MP5094GJ-P is housed in a thermally enhanced TSOT23-8 package (3mm × 3mm, 0.65mm pitch), with exposed pad for improved heat dissipation and PCB-level thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC1 | Channel 1 input supply | 12V rail input; requires local ceramic decoupling and wide trace for high-current integrity. |
| 2 SS1 | Channel 1 soft-start control | Connects to external capacitor to linearly ramp VOUT1 slew rate - sets inrush current profile. |
| 3 SS2 | Channel 2 soft-start control | Independent soft-start for 5V rail; enables staggered power-up of mixed-voltage subsystems. |
| 4 VCC2 | Channel 2 input supply | 5V rail input; decoupled separately to avoid cross-talk with Ch1 supply path. |
| 5 VOUT2 | Channel 2 output | Protected 5V output; clamped to ≤6V during over-voltage events - safeguards SATA/NVMe logic. |
| 6 GND | System ground reference | Common return for both channels; must be low-impedance and tied directly to thermal pad. |
| 7 EN | Global enable/disable control | Active-low digital input; float or pull-down to enable; pull-high to disable - supports system-level sequencing. |
| 8 VOUT1 | Channel 1 output | Protected 12V output; clamped to ≤15.5V - secures spindle motor drivers and analog circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent e-fuse channels | Separate 12V and 5V protection paths with dedicated UVLO, OVP, and current limit - eliminates need for discrete fuses or dual ICs. |
| Integrated OVP with 2μs response | Clamps VOUT1 to ≤15.5V and VOUT2 to ≤6.0V within 2μs - prevents damage to downstream 12V/5V ICs during ESD or load-dump events. |
| Hiccup-mode over-current recovery | Enters 200ms off-cycle after >150μs overload - maintains system visibility while preventing thermal runaway during sustained shorts. |
| Secondary 8A short-circuit cutoff | Triggers <1μs turn-off when current exceeds 8A - limits peak fault energy and preserves input rail stability during hard shorts. |
| Thermal shutdown with latch-off | Shuts down at 155°C junction temperature and remains latched until reset - avoids oscillation near thermal limit in enclosed enclosures. |
Applications
| Hard Disk Drive (HDD) Power Sequencing | Solid-State Drive (SSD) Hot-Swap Protection |
|---|---|
Use Scenario: Inserting an HDD into a powered-backplane server chassis where 12V spindle and 5V logic rails are live. IC Role / Device Role / Timing Role: Dual-channel e-fuse providing simultaneous inrush limiting, OVP clamping, and current limiting on both rails during insertion. Use Value: Prevents backplane voltage sag, suppresses 24V/100ms transients, and avoids tripping upstream breakers during mechanical mating. | Use Scenario: Hot-plugging NVMe SSDs into enterprise storage enclosures with shared 12V auxiliary and 5V interface power. IC Role / Device Role / Timing Role: Independent protection for PCIe interface (5V) and auxiliary (12V) rails, with coordinated soft-start to meet PCIe CEM spec timing. Use Value: Enables compliant hot-swap without external TVS diodes or discrete current monitors - reduces BOM count by ≥3 components per slot. |
| Industrial PLC I/O Module Power Isolation | Medical Imaging Board Input Protection |
Use Scenario: Protecting field I/O channels in programmable logic controllers where 12V sensor power and 5V logic share a compact module PCB. IC Role / Device Role / Timing Role: High-side switch with UVLO, OCP, and OVP per rail - isolates faults without affecting adjacent modules. Use Value: Achieves SIL-2 compatible fault containment using single IC; eliminates risk of cascading failure from field-wiring shorts. | Use Scenario: Securing power inputs to FPGA-based image processing boards in MRI or CT scanner subsystems where EMI-induced transients are common. IC Role / Device Role / Timing Role: Fast OVP (2μs) and hiccup-mode OCP on both 12V analog supply and 5V digital core rails. Use Value: Prevents latent damage to precision ADCs and clock buffers during radiated RF bursts - validated per IEC 61000-4-4 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rail current-limiting e-fuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS25942LARVYR | Single-channel, 2.7–24V input, adjustable current limit (0.5–5.2A), 1.2mΩ RDS(ON); no integrated OVP clamp. | Requires external OVP circuitry for 12V/5V rail protection; lacks dual independent channels. | Choose only if needing ultra-low RDS(ON) and external OVP is acceptable; not drop-in for MP5094GJ-P's dual-rail integration. |
| RTQ2132BGQW | Dual-channel, 2.5–18V input, adjustable current limit (0.6–5A), 25mΩ/20mΩ RDS(ON); OVP threshold fixed at 6.2V/16.5V. | Supports lower min-input (2.5V) but lacks 24V/100ms surge rating on 12V channel; no hiccup-mode OCP. | Select when wider input range is critical and thermal recovery behavior can be managed externally; verify OVP timing against 2μs requirement. |
Compared with TPS25942LARVYR and RTQ2132BGQW, MP5094GJ-P uniquely combines dual-rail integration, guaranteed 24V/100ms surge tolerance, 2μs OVP response, and hiccup-mode recovery - making it optimal for space-constrained, high-reliability hot-swap storage and industrial modules.
Availability
MP5094GJ-P is available at Aetrix Electronics and suitable for hard disk drives, solid-state drives, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for MP5094GJ-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with design focus on efficiency, integration, and reliability across computing, storage, and industrial markets.
The MP5094 belongs to MPS's eFuse and load switch product line, engineered specifically for hot-swap, inrush control, and fault protection in multi-rail storage and embedded systems - emphasizing small footprint, fast transient response, and system-level robustness.
FAQ
What is the maximum allowable input voltage transient for each channel?
Channel 1 (12V rail) withstands up to 24V for 100ms; Channel 2 (5V rail) withstands up to 16V for 100ms. These values are specified in Absolute Maximum Ratings and validated per JEDEC JESD78 latch-up immunity testing - exceeding them risks permanent damage.
How is soft-start time calculated for MP5094GJ-P?
Soft-start time tSS (ms) = (CSS × VCLAMPx) / (5.5μA × VINx), where VCLAMP1 = 15V, VCLAMP2 = 5.7V, and VINx is the respective input voltage. For example, a 68nF capacitor yields ~10ms ramp on both channels.
Does MP5094GJ-P require external current-sense resistors?
No. The device uses internal MOSFET RDS(ON) for current sensing and does not require external sense resistors. This eliminates power loss, board area, and calibration overhead associated with shunt-based solutions.
What happens during a short-circuit event?
Upon short detection, MP5094GJ-P first enters constant-current hold mode (2.95A/2.18A). If the fault persists >150μs, it initiates hiccup mode (200ms off-time). A secondary 8A fast cutoff activates within <1μs to limit peak current and prevent input collapse.
Is the EN pin internally pulled down?
Yes. An internal 280kΩ resistor connects EN to GND, allowing the device to power up automatically when EN is left floating. Driving EN ≥1.4V disables both channels; driving EN ≤0.6V enables them.
What is the thermal shutdown behavior?
At 155°C junction temperature, MP5094GJ-P shuts down completely and latches off. It remains disabled until junction temperature falls below the hysteresis threshold (~140°C) and EN is cycled - preventing thermal oscillation in high-ambient environments.
MP5094GJ-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N/P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 4.6V ~ 5.5V, 10.2V ~ 14.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 3A, 4A
- Rds On (Typ):
- 50mOhm, 30mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Over Voltage
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
MP5094GJ-P FAQ
1.How can I place an order for MP5094GJ-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP5094GJ-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MP5094GJ-P reliable?
The price and inventory of MP5094GJ-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP5094GJ-P is usually 5 days.
3.What payment methods are accepted for MP5094GJ-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP5094GJ-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP5094GJ-P?
MP5094GJ-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP5094GJ-P order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MP5094GJ-P?
For technical support, including MP5094GJ-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP5094GJ-P requirements.
6.How does Aetrix verify that MP5094GJ-P is sourced from the original manufacturer or authorized distributors?
All MP5094GJ-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP5094GJ-P meets industry standards.
7.What is the process for return or replacement of MP5094GJ-P?
All MP5094GJ-P units undergo pre-shipment inspection (PSI). If there is an issue with MP5094GJ-P, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MP5094GJ-P part is unused and in its original packaging.
Return procedure for MP5094GJ-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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